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AlkapHix® Mg(OH)2 Storage Recommendations

Updated: Jan 24, 2022

After determining that magnesium hydroxide is a good fit for your application, your next consideration should be how it’s stored and fed into your system. These are crucial to the success of your application. Oftentimes, we can utilize existing infrastructure, and it becomes as simple as replacing your current alkalinity source. In this post, we will talk more about the storage recommendations specifically. In part two, we will discuss dosing considerations.

There are occasions when additional storage capacity and agitating tanks are required and need to be brought on site. Our consultation process at Garrison Minerals includes an in-depth conversation with plant operators and engineering firms to determine the most efficient and cost-effective onsite strategy.


  • Seamless Transition

This is vital for maintaining your water system and ensuring all staff are familiar with the ins and outs of the new magnesium hydroxide system.

  • Cost Efficiency

Current costs, initial installation costs, and future material/maintenance costs are carefully analyzed to meet predefined goals.

  • Maintenance Reduction

A reduced maintenance cost can be expected when possible, especially when coming from an alternative alkalinity source. That said, any slurry application requires proper equipment maintenance to reduce the likelihood of clogging and contamination.

  • Reduced or Minimal Onsite Footprint

Your current architecture and equipment can and oftentimes are reused. When this option isn’t available, we consider minimizing the impact an onsite agitation tank has on your overall landscape.

  • Mg(OH)2 slurry should be stored in an agitated tank.

Custom tanks by Garrison Minerals can be provided in sizes ranging from a

330 gallon tote to a 16,500 gallon tank

  • Tanks and slurry with proper agitation are okay at most ambient temperatures.

  • Tanks can be continuously agitated or intermittently throughout storage depending on the % solids of the solution, temperature, size of tank, agitation motor, and impeller size. Keep in mind; each scenario is unique to the site location and most tanks are fully customized for the client.

  • Operators should store the powder indoors, away from the elements.

  • The powder should remain in the packaging until use or stored in bulk using a silo.

  • Store in dry ventilated space.

  • Remember that exposure to moisture may cause caking.

  • Making your own Mg(OH)2 slurry can be accomplished. Again, an agitation tank is highly recommended.

  • Blending calculations can be provided by one of our consultants.


AlkapHix Magnesium Hydroxide, in either slurry or powder, is an excellent option to add to your wastewater treatment operation. We have experience implementing systems of all sizes and are ready to give you a free consultation.

Contact Garrison Minerals to book yours today!



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